Verbal - Odd Man Out

DIRECTIONS : In this oddman out section we need choose the word or pair that different from remaining words or pairs.
1. Pick the odd man out
  A.  Preprocessor
  B.  Header File
  C.  Macros
  D.  Compiler
2. Pick the odd man out
  A. Lion : roar
  B. snake : hiss
  C. bees : hum
  D. frog : bleat

3. Pick the odd man out
  A.  microscope
  B.  telescope
  C.  stethoscope
  D.  periscope
4. Pick the odd man out
  A.  Curd
  B.  Butter
  C.  Cheese
  D.  Oil
5. Pick the odd man out
  A.  Java
  B.  Structures
  C.  Unions
  D.  C++